npm install package from github repo subfolder

Paste the github link to the subfolder into gitpkg. You can then use this along with yarn or npm to install the package from a github sub folder.

https://gitpkg.now.sh/

Add to package.json:

...
"scripts": {
  "postinstall": "mkdir BotBuilder; cd BotBuilder; git init; git remote add -f origin https://github.com/Microsoft/BotBuilder.git; git config core.sparseCheckout true; echo \"Node/core\" >> .git/info/sparse-checkout; git pull --depth=1 origin master; cd ..; npm i ./BotBuilder/Node/core/"
  ...
},
...

postinstall script is running after the package is installed.

And step by step:

1. Make folder to clone repo: mkdir BotBuilder
2. enter to the folder: cd BotBuilder
3. init git repo: git init
4. set git origin to Microsoft/BotBuilder repo: git remote add -f origin https://github.com/Microsoft/BotBuilder.git
5. enable sparse checkout: git config core.sparseCheckout true
6. add Node/core to checkout list: echo "Node/core" >> .git/info/sparse-checkout
7. pull part of repo: git pull --depth=1 origin master
8. enter to Your app folder: cd ..
9. install BotBuilder: npm i ./BotBuilder/Node/core/